linux-kernel - Re: [PATCH] Add hierarchical accounting to cpu accounting controller

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Message-Id: <20081027101703.e954071d.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Mon, 27 Oct 2008 10:17:03 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	"Paul Menage" <menage@...gle.com>
Cc:	bharata@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	"Srivatsa Vaddagiri" <vatsa@...ux.vnet.ibm.com>,
	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>,
	"Ingo Molnar" <mingo@...e.hu>
Subject: Re: [PATCH] Add hierarchical accounting to cpu accounting
 controller

On Sat, 25 Oct 2008 08:38:52 -0700
"Paul Menage" <menage@...gle.com> wrote:

> On Fri, Oct 24, 2008 at 11:01 PM, Bharata B Rao
> <bharata@...ux.vnet.ibm.com> wrote:
> >
> > Reported-by: Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
> > Signed-off-by: Bharata B Rao <bharata@...ux.vnet.ibm.com>
> 
> Reviewed-by: Paul Menage <menage@...gle.com>
> 
> So in technical terms this patch looks fine now. There's still the
> question of whether it's OK to change the existing API, since it's
> been in the kernel in its currently (non-hierarchical) form for
> several releases now.
> 
Hmm..how about having 2 params as "aggregated usage" and "private usage" ?

 cpuacct.usage.
 cpuacct.all_subtree_usage.

heavy ?

-Kame

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